The innovative 2-in-1 CO2 doser and the tubeless tire repair kit inflate and seal tubeless tires at the same time. The machined aluminum construction is both lightweight and extremely strong. With the hardened steel tire reamer, holes can be optimally prepared for a quick and efficient repair. The CNC machined knob manually controls the release of CO2 gas. The aluminum box contains five included tire plugs and keeps the tools safe. The high-quality tire plugs also plug holes that are too large to be sealed with sealant alone (hole size varies from tire to tire). With a slim, compact design, the tool fits in a pocket or strapped to your bike.